Castus, enraptured by the thought that he had captured this proud beauty, could scarce contain himself for joy. He had no difficulty in keeping his assignation, for he had a good pretext in an old promise to advise with the Commander of the Chesters Camp. Thus he rode out joyously next afternoon from Corstopitum, and as dusk drew on and the time for the moon's rising came near, he dismounted below the limestone crags and led his horse slowly up to the highest point of the limestone outcrop where a monolith stood dark and threatening. Tethering his horse to a tree near by he advanced towards it, and the moon—now risen—faintly touched it with light. Two figures moved from it as he came up. The first was Penchrysa, the second an old, grey-bearded man.
'Welcome, O Roman!' said she gravely, then with more emotion, 'thy looks and actions tell me thou lovest me. If so I have a proposal to make to thee; and as I know your tongue but ill this old man, my friend, who has served with your armies, will set it before thee, for I have no skill in the Roman language.'
Castus, carried away by his passion, seized her hand and kissed it, and was about to put his arms about her, but she put up her hand and bade him wait for her proposal from the interpreter's lips.
'Thou art strong, O Roman,' said the old man earnestly, 'brave, and canst command men, for my Princess has watched thee narrowly. She is of royal birth, and royal amongst womankind. None surpasses her. She will give thee herself if thou wilt command our hosts. The Caledonii will avenge Mons Grampius and rise with the British race, fling off the hated yoke of Rome, and make this island free as it was of old. There are ten thousand within call of us now!' He whistled thrice like a golden plover, and on all sides dark forms showed themselves in response to his call. 'The rule of Rome approacheth its doom. This wall proves their weakness. The Emperor is in the western land and can be dispatched with ease. We want a leader, and our Princess chooseth thee. Take her and be Emperor of Britain.'
As he spake thus, Penchrysa leaned forward and whispered in the ear of the astounded Roman, 'Come, and we will rule together!' Her lovely face showing lovelier in the soft moonlight, her breath honey-sweet upon his cheek, the vision of rule together had almost intoxicated him. But then the shame of betrayal rose in him like a flood. Lust dropped from him as a garment. In one second he had drawn his sword and stabbed his temptress to the heart. 'So perish!' he cried aloud, 'all enemies of Rome!'
He bounded to his horse, leapt on its back, and at breakneck speed they hurtled down the fell. He was wounded by darts in shoulder and right arm, and his horse's loins were gashed by a spear, yet the camp at Chesters was but two miles away, and, setting his teeth together, he gave his horse the rein and leaned forward on its neck to take his weight off the loins.
The yells of the pursuers became fainter as he sped onward. Soon he saw the dark outline of the camp on the haugh below, and in a few minutes arrived at the western port.
'Who are ye?' inquired the sentry of the port.
'Castus, Vexillarius of the first squadron, Sixth Legion,' he shouted hoarsely, 'the Britons have risen!'